SPA-H steel plates are available in a wide range of shapes, thicknesses, and dimensional options, allowing them to meet diverse structural and architectural requirements.
Gnee Steel is an experienced supplier, trader, and manufacturer of steel plates, with a long-standing presence in the international steel market.
Supported by a team of skilled and professional engineers with extensive export experience, Bebon Steel designs and produces SPA-H weathering steel plates in strict accordance with international standards and customer-specific technical requirements.
Customer needs are carefully reviewed and confirmed before production begins, ensuring optimal material performance for each application.
To support global demand, Gnee Steel maintains regular stock of SPA-H steel plates for worldwide supply. All products are delivered with mill test certificates (MTC), proper stamping, and full traceability, ensuring quality assurance and compliance at competitive and affordable price levels.
SPA-H Weathering Steel Chemical Composition
| Grade | C ≤ | Si | Mn | P | S ≤ | Cu | Cr | Ni ≤ |
|---|---|---|---|---|---|---|---|---|
| SPA-H | 0.12 | 0.25–0.75 | 0.20–0.50 | 0.070–0.150 | 0.040 | 0.25–0.60 | 0.30–1.25 | 0.65 |
The balanced alloying of copper, chromium, and nickel enables SPA-H steel to form a stable protective patina, significantly enhancing its resistance to atmospheric corrosion.
SPA-H Weathering Steel Mechanical Properties
| Grade | Plate Thickness | Yield Strength | Tensile Strength | Elongation |
|---|---|---|---|---|
| SPA-H | ≤ 6.0 mm | ≥ 345 MPa | ≥ 480 MPa | ≥ 22% |
| SPA-H | > 6.0 mm | ≥ 335 MPa | ≥ 490 MPa | ≥ 15% |
These mechanical properties ensure excellent load-bearing capacity, formability, and durability, making SPA-H suitable for demanding outdoor structural applications.
Equivalent Grades and Supply Scope
Gnee Steel supplies a full range of Corten and weathering steels, including SPA-H steel and ASTM A588. Under JIS G3125, SPA-H is commonly recognized as an equivalent grade to ASTM A588, with comparable atmospheric corrosion resistance and mechanical performance.
Whether you require SPA-H weathering steel plate, JIS G3125 Corten Steel, or ASTM A588 equivalent grades, Bebon Steel can provide reliable solutions tailored to your project needs.
For more information about SPA-H steel specifications, equivalent grades, pricing, or availability-or if you are sourcing any type of Corten/weathering steel-please feel free to contact BBN Steel at any time for professional support and prompt quotation.
What is spa H material?
As Spa-h steel coil material is a weathering steel, it forms the protective patina on the surface which gives it a rustic appearance. The chemical composition of the JIS g3125 spa-h strip includes carbon, silicon, manganese, phosphorus, sulphur, copper, chromium and nickel.
What is spa-h steel equivalent?
Worldwide equivalents of grade SPA-H (Japan: JIS ) Cross reference table for Steel SPA-H (JIS ) and its European equivalent S355J0WP (1.8945)
What is the chemical composition of SPA-H Steel?
The main elements include carbon (C), manganese (Mn), silicon (Si), chromium (Cr), and copper (Cu). Their contents are strictly controlled to ensure mechanical properties and weather resistance.
How to maintain SPA-H Steel?
SPA-H steel requires minimal maintenance. A stable rust layer protects the steel. Regular cleaning to remove dust or debris and avoiding prolonged water exposure is sufficient.
Can SPA-H Steel be welded?
Yes. Low-hydrogen arc welding or gas shielded welding is recommended. Preheating and slow cooling after welding help prevent cracking.
| CORTEN | Corten A | Corten B | ||
| ASTM A588/A588M | A588 Grade A | A588 Grade B | A588 Grade C | A588 Grade K |
| ASME SA588/SA588M | SA588 Grade A | SA588 Grade B | SA588 Grade C | SA588 Grade K |
| EN 10025-5 | S235J0W | S235J2W | S355J0WP | S355J2WP |
| S355J0W | S355J2W | S355K2W | ||
| EN 10155 | S235J0W | S235J2W | ||
| S355J0WP | S355J2WP | |||
| S355J0W | S355J2G1W | S355J2G2W | S355K2G1W | |
| S355K2G2W | ||||
| TB/T 1979 | 08CuPVRE | 09CuPTiRE-A | 09CuPTiRE-B | 09CuPCrNi-A |
| 09CuPCrNi-B | 05CuPCrNi | |||
| GB/T 4171 | Q295GNH | Q345GNH | Q265GNH | Q310GNH |
| Q235NH | Q295NH | Q355NH | Q415NH | |
| Q460NH | Q500NH | Q550NH | ||
| JIS G 3114 | SMA400AW | SMA400BW | SMA400CW | |
| SMA400AP | SMA400BP | SMA400CP | ||
| SMA490AW | SMA490BW | SMA490CW | ||
| SMA490AP | SMA490BP | SMA490CP | ||
| SMA570W | SMA570P | |||
| JIS G3125 | SPA-H | SPA-C |
